TMFILT is a standard SAP Structure so does not store data like a database table does. It can be used to define the fields of other actual tables or to process "Filter for Monitoring Dates" Information within sap ABAP programs. This is done by declaring abap internal tables, work areas or database tables based on this Structure. These can then be used to store and process the required data appropriately. i.e. DATA: wa_TMFILT TYPE TMFILT.
The TMFILT table consists of various fields, each holding specific information or linking keys about Filter for Monitoring Dates data available in SAP. These include MATKL (Material Group), EKGRP (Purchasing Group), LIFNR (Account Number of Vendor or Creditor), SOBKZ (Special Stock Indicator)... See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .